Discovery for spectrum renting

ABSTRACT

Wireless communication systems and methods related to service advertising and discovery with dynamic spectrum use are provided. A user equipment (UE) receives, from a first wireless communication device, a network information signal in a spectrum. The UE receives, from a second wireless communication device, a service advertising signal based on at least a synchronization to the network information signal. The service advertising signal indicates an availability of a service. The UE transmits, to the second wireless communication device, a request for the service. The first wireless communication device and the second wireless communication device are associated with different operating entities of the spectrum.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priority to and the benefit of the U.S.Provisional Patent Application No. 62/518,392, filed Jun. 12, 2017,which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

This application relates to wireless communication systems, and moreparticularly to service advertising and service discovery with dynamicspectrum use.

INTRODUCTION

Wireless communications systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be capable ofsupporting communication with multiple users by sharing the availablesystem resources (e.g., time, frequency, and power).

A wireless communications system may operate over a shared spectrum,meaning that the wireless communications system includes one or morefrequency bands that may be shared by multiple network operatingentities. In some instances, multiple network operating entities mayshare their licensed spectrum with each other or with other third-partyoperators to better utilize the spectrum.

One approach to sharing a medium or a spectrum is to employ apriority-based coordinated access scheme. In the priority-basedcoordinated access scheme, a shared spectrum is partitioned intomultiple time periods. At any time period, one operator may be a primaryuser and have priority to access the spectrum while other operators mayopportunistically access the spectrum when the spectrum is available. Insome instances, the operators may take turn to become a primary user,for example, in a round-robin manner. Spectrum pooling is an exampleresource sharing strategy where an operator is a primary user in aspectrum owned or licensed by the operator and may opportunisticallyaccess a spectrum of another operator.

Some local operating entities or third-parties may not own any spectrum.For example, a local operating entity, such as local stores or localbusinesses, may provide wireless services, such as Institute ofElectrical and Electronics Engineers (IEEE) 801.11 (WiFi) services, tousers over an unlicensed spectrum. The unlicensed spectrum may be sharedby multiple operating entities serving corresponding users. As thenumber of users on the unlicensed spectrum increases, the unlicensedspectrum can become congested. Thus, the local operating entity may notbe able to provide guaranteed services and can only provide best-effortservices over the unlicensed spectrum.

One approach to enabling local operating entities to providehigh-bandwidth, high-quality services is to allow local operatingentities to request temporary use (e.g., renting) of licensed spectrumsin local geographic areas of the local operating entities. For example,a local operating entity may dynamically request spectrum use from oneor more spectrum controlling entities (e.g., spectrum owners) based onservice demands. The dynamic spectrum use allows local operatingentities to provide high-bandwidth, high-quality services to userequipment (UE) in proximity of the local operating entities. In additionto spectrum sharing or renting, mechanisms for local operating entitiesto leverage spectrum owner network operations and/or coordinate networkoperations with spectrum owner network may be desirable.

BRIEF SUMMARY OF SOME EXAMPLES

The following summarizes some aspects of the present disclosure toprovide a basic understanding of the discussed technology. This summaryis not an extensive overview of all contemplated features of thedisclosure, and is intended neither to identify key or critical elementsof all aspects of the disclosure nor to delineate the scope of any orall aspects of the disclosure. Its sole purpose is to present someconcepts of one or more aspects of the disclosure in summary form as aprelude to the more detailed description that is presented later.

For example, in an aspect of the disclosure, a method of wirelesscommunication includes receiving, by a user equipment (UE) from a firstwireless communication device, a network information signal in aspectrum; receiving, by the UE from a second wireless communicationdevice, a service advertising signal based on at least a synchronizationto the network information signal, the service advertising signalindicating an availability of a service; and transmitting, by the UE tothe second wireless communication device, a request for the service,wherein the first wireless communication device and the second wirelesscommunication device are associated with different operating entities ofthe spectrum.

In an additional aspect of the disclosure, a method of wirelesscommunication includes obtaining, by a first wireless communicationdevice, a network configuration for communication in a spectrum;transmitting, by the first wireless communication device, a serviceadvertising signal in the spectrum based on the network configuration,the service advertising signal being based on a synchronization to anetwork information signal transmitted by a second wirelesscommunication device, the service advertising signal indicating anavailability of a service; and receiving, by the first wirelesscommunication device from a user equipment (UE), a request for theservice, wherein the first wireless communication device and the secondwireless communication device are associated with different operatingentities of the spectrum.

In an additional aspect of the disclosure, a method of wirelesscommunication includes communicating, by a first wireless communicationdevice with a second wireless communication device in a first frequencyband, a service advertising signal indicating an availability of aservice in a second frequency band; and communicating, by the firstwireless communication device with the second wireless communicationdevice in the second frequency band, a communication signal during atime period based on a spectrum use grant from a controlling entity ofthe second frequency band, the communication signal associated with theservice, wherein the first frequency band and the second frequency bandare different.

In an additional aspect of the disclosure, an apparatus includes atransceiver configured to receive, from a first wireless communicationdevice, a network information signal in a spectrum; receive, from asecond wireless communication device, a service advertising signal basedon at least a synchronization to the network information signal, theservice advertising signal indicating an availability of a service; andtransmit, to the second wireless communication device, a request for theservice, wherein the first wireless communication device and the secondwireless communication device are associated with different operatingentities of the spectrum.

Other aspects, features, and embodiments of the present invention willbecome apparent to those of ordinary skill in the art, upon reviewingthe following description of specific, exemplary embodiments of thepresent invention in conjunction with the accompanying figures. Whilefeatures of the present invention may be discussed relative to certainembodiments and figures below, all embodiments of the present inventioncan include one or more of the advantageous features discussed herein.In other words, while one or more embodiments may be discussed as havingcertain advantageous features, one or more of such features may also beused in accordance with the various embodiments of the inventiondiscussed herein. In similar fashion, while exemplary embodiments may bediscussed below as device, system, or method embodiments it should beunderstood that such exemplary embodiments can be implemented in variousdevices, systems, and methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a wireless communication network according toembodiments of the present disclosure.

FIG. 2 illustrates a wireless communication network that implementsspectrum renting according to embodiments of the present disclosure.

FIG. 3A illustrates a spectrum usage scenario according to embodimentsof the present disclosure.

FIG. 3B illustrates a spectrum usage scenario with a spectrum rentalaccording to embodiments of the present disclosure.

FIG. 4 is a block diagram of an exemplary user equipment (UE) accordingto embodiments of the present disclosure.

FIG. 5 is a block diagram of an exemplary base station (BS) according toembodiments of the present disclosure.

FIG. 6 is a block diagram of an exemplary central unit according toembodiments of the present disclosure.

FIG. 7 a signaling diagram of a synchronous service advertising anddiscovery method according to embodiments of the present disclosure.

FIG. 8 is a timing diagram illustrating a broadcast channel transmissionscenario according to embodiments of the present disclosure.

FIG. 9 is a signaling diagram of a spectrum allocation method accordingto embodiments of the present disclosure.

FIG. 10 a signaling diagram of an asynchronous service advertising anddiscovery method according to embodiments of the present disclosure.

FIG. 11 is a flow diagram of a synchronous service discovery methodaccording to embodiments of the present disclosure.

FIG. 12 is a flow diagram of a synchronous service provisioning methodaccording to embodiments of the present disclosure.

FIG. 13 is a flow diagram of a spectrum allocation method according toembodiments of the present disclosure.

FIG. 14 is a flow diagram of an asynchronous service advertising anddiscovery method according to embodiments of the present disclosure.

DETAILED DESCRIPTION

The detailed description set forth below, in connection with theappended drawings, is intended as a description of variousconfigurations and is not intended to represent the only configurationsin which the concepts described herein may be practiced. The detaileddescription includes specific details for the purpose of providing athorough understanding of the various concepts. However, it will beapparent to those skilled in the art that these concepts may bepracticed without these specific details. In some instances, well-knownstructures and components are shown in block diagram form in order toavoid obscuring such concepts.

The techniques described herein may be used for various wirelesscommunication networks such as code-division multiple access (CDMA),time-division multiple access (TDMA), frequency-division multiple access(FDMA), orthogonal frequency-division multiple access (OFDMA),single-carrier FDMA (SC-FDMA) and other networks. The terms “network”and “system” are often used interchangeably. A CDMA network mayimplement a radio technology such as Universal Terrestrial Radio Access(UTRA), cdma2000, etc. UTRA includes Wideband CDMA (WCDMA) and othervariants of CDMA. cdma2000 covers IS-2000, IS-95 and IS-856 standards. ATDMA network may implement a radio technology such as Global System forMobile Communications (GSM). An OFDMA network may implement a radiotechnology such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB),IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc.UTRA and E-UTRA are part of Universal Mobile Telecommunication System(UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newreleases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSMare described in documents from an organization named “3rd GenerationPartnership Project” (3GPP). CDMA2000 and UMB are described in documentsfrom an organization named “3rd Generation Partnership Project 2”(3GPP2). The techniques described herein may be used for the wirelessnetworks and radio technologies mentioned above as well as otherwireless networks and radio technologies, such as a next generation(e.g., 5^(th) Generation (5G) operating in mmWave bands) network.

The present application describes mechanisms for local serviceadvertising and discovery with dynamic spectrum use. A local operatormay request temporary spectrum use (e.g., spectrum renting) of aspectrum from a controlling entity of the spectrum based on servicerequests from user equipments (UEs) in proximity of the local operatingentity. Examples of a spectrum controlling entity may include an ownerof a spectrum, an exclusive licensee of a spectrum, and a non-exclusivelicensed primary operator of a spectrum. The disclosed embodiments mayrefer to the controlling entity as a spectrum owner.

In an embodiment, local service advertising and discovery may beperformed in-band within a spectrum where a spectrum owner networkoperates and in synchronization with the spectrum owner network. Forexample, the spectrum owner network may broadcast network informationsignals including synchronization signals and indicating time periodsdesignated for local service advertising. Each local operator may beassigned with dedicated time periods (e.g., including periodicities) forlocal service advertising. A local operator base station (BS) maytransmit service advertising signals in corresponding time periods andin synchronization with the network information signals. A UE maysynchronize to the network information signals and searches for localservices. In an embodiment, local operators may negotiate time resourcesfor local service advertising with a spectrum owner. In an embodiment, aspectrum owner may dynamically modify resource allocations for localservice advertising and/or dynamically suspend certain local serviceadvertising.

In an embodiment, local service advertising and discovery may beperformed asynchronously in a spectrum different from where services aredelivered. For example, a local operating entity may advertise serviceavailabilities in an unlicensed band. The local operating entity mayadvertise services using service set identifier (SSID) in a wirelesslocal area network (WLAN). Alternatively, a local operating entity mayadvertise service availabilities in a common band, for example, in a 3.5gigahertz (GHz) shared spectrum. The local operating entity may operatein a general authorized access (GAA) tier and advertise services whenthe channel is idle.

Aspects of the present disclosure can provide several benefits. Forexample, the synchronous-in-band local service advertising and discoveryallows local operator networks to leverage network information signalsfrom spectrum owner networks instead of transmitting separatesynchronization signals. The asynchronous local service advertising anddiscovery may allow for simpler coordination between local operators andspectrum owners.

FIG. 1 illustrates a wireless communication network 100 according toembodiments of the present disclosure. The network 100 includes BSs 105,UEs 115, and a core network 130. In some embodiments, the network 100operates over a shared spectrum. The shared spectrum may be unlicensedor partially licensed to one or more network operators. Access to thespectrum may be limited and may be controlled by a separate coordinationentity. In some embodiments, the network 100 may be a LTE or LTE-Anetwork. In yet other embodiments, the network 100 may be a millimeterwave (mmW) network, a new radio (NR) network, a 5G network, or any othersuccessor network to LTE. The network 100 may be operated by more thanone network operator. Wireless resources may be partitioned andarbitrated among the different network operators for coordinatedcommunication between the network operators over the network 100.

The BSs 105 may wirelessly communicate with the UEs 115 via one or moreBS antennas. Each BS 105 may provide communication coverage for arespective geographic coverage area 110. In 3GPP, the term “cell” canrefer to this particular geographic coverage area of a BS and/or a BSsubsystem serving the coverage area, depending on the context in whichthe term is used. In this regard, a BS 105 may provide communicationcoverage for a macro cell, a pico cell, a femto cell, and/or other typesof cell. A macro cell generally covers a relatively large geographicarea (e.g., several kilometers in radius) and may allow unrestrictedaccess by UEs with service subscriptions with the network provider. Apico cell may generally cover a relatively smaller geographic area andmay allow unrestricted access by UEs with service subscriptions with thenetwork provider. A femto cell may also generally cover a relativelysmall geographic area (e.g., a home) and, in addition to unrestrictedaccess, may also provide restricted access by UEs having an associationwith the femto cell (e.g., UEs in a closed subscriber group (CSG), UEsfor users in the home, and the like). A BS for a macro cell may bereferred to as a macro BS. A BS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1, the BSs 105 a, 105 b and 105 care examples of macro BSs for the coverage areas 110 a, 110 b and 110 c,respectively. The BSs 105 d is an example of a pico BS or a femto BS forthe coverage area 110 d. As will be recognized, a BS 105 may support oneor multiple (e.g., two, three, four, and the like) cells.

Communication links 125 shown in the network 100 may include uplink (UL)transmissions from a UE 115 to a BS 105, or downlink (DL) transmissions,from a BS 105 to a UE 115. The UEs 115 may be dispersed throughout thenetwork 100, and each UE 115 may be stationary or mobile. A UE 115 mayalso be referred to as a mobile station, a subscriber station, a mobileunit, a subscriber unit, a wireless unit, a remote unit, a mobiledevice, a wireless device, a wireless communications device, a remotedevice, a mobile subscriber station, an access terminal, a mobileterminal, a wireless terminal, a remote terminal, a handset, a useragent, a mobile client, a client, or some other suitable terminology. AUE 115 may also be a cellular phone, a personal digital assistant (PDA),a wireless modem, a wireless communication device, a handheld device, atablet computer, a laptop computer, a cordless phone, a personalelectronic device, a handheld device, a personal computer, a wirelesslocal loop (WLL) station, an Internet of things (IoT) device, anInternet of Everything (IoE) device, a machine type communication (MTC)device, an appliance, an automobile, or the like.

The BSs 105 may communicate with the core network 130 and with oneanother. The core network 130 may provide user authentication, accessauthorization, tracking, Internet Protocol (IP) connectivity, and otheraccess, routing, or mobility functions. At least some of the BSs 105(e.g., which may be an example of an evolved NodeB (eNB), a nextgeneration NodeB (gNB), or an access node controller (ANC)) mayinterface with the core network 130 through backhaul links 132 (e.g.,S1, S2, etc.) and may perform radio configuration and scheduling forcommunication with the UEs 115. In various examples, the BSs 105 maycommunicate, either directly or indirectly (e.g., through core network130), with each other over backhaul links 134 (e.g., X1, X2, etc.),which may be wired or wireless communication links.

Each BS 105 may also communicate with a number of UEs 115 through anumber of other BSs 105, where the BS 105 may be an example of a smartradio head. In alternative configurations, various functions of each BS105 may be distributed across various BSs 105 (e.g., radio heads andaccess network controllers) or consolidated into a single BS 105.

In some implementations, the network 100 utilizes orthogonal frequencydivision multiplexing (OFDM) on the downlink and single-carrierfrequency division multiplexing (SC-FDM) on the UL. OFDM and SC-FDMpartition the system bandwidth into multiple (K) orthogonal subcarriers,which are also commonly referred to as tones, bins, or the like. Eachsubcarrier may be modulated with data. In general, modulation symbolsare sent in the frequency domain with OFDM and in the time domain withSC-FDM. The spacing between adjacent subcarriers may be fixed, and thetotal number of subcarriers (K) may be dependent on the systembandwidth. The system bandwidth may also be partitioned into subbands.

In an embodiment, the BSs 105 can assign or schedule transmissionresources (e.g., in the form of time-frequency resource blocks) for DLand UL transmissions in the network 100. DL refers to the transmissiondirection from a BS 105 to a UE 115, whereas UL refers to thetransmission direction from a UE 115 to a BS 105. The communication canbe in the form of radio frames. A radio frame may be divided into aplurality of subframes, for example, about 10. Each subframe can bedivided into slots, for example, about 2. In a frequency-divisionduplexing (FDD) mode, simultaneous UL and DL transmissions may occur indifferent frequency bands. For example, each subframe includes a ULsubframe in a UL frequency band and a DL subframe in a DL frequencyband. In a time-division duplexing (TDD) mode, UL and DL transmissionsoccur at different time periods using the same frequency band. Forexample, a subset of the subframes (e.g., DL subframes) in a radio framemay be used for DL transmissions and another subset of the subframes(e.g., UL subframes) in the radio frame may be used for ULtransmissions.

The DL subframes and the UL subframes can be further divided intoseveral regions. For example, each DL or UL subframe may havepre-defined regions for transmissions of reference signals, controlinformation, and data. Reference signals are predetermined signals thatfacilitate the communications between the BSs 105 and the UEs 115. Forexample, a reference signal can have a particular pilot pattern orstructure, where pilot tones may span across an operational bandwidth orfrequency band, each positioned at a pre-defined time and a pre-definedfrequency. For example, a BS 105 may transmit cell-specific referencesignals (CRSs) and/or channel state information-reference signals(CSI-RSs) to enable a UE 115 to estimate a DL channel. Similarly, a UE115 may transmit sounding reference signals (SRSs) to enable a BS 105 toestimate a UL channel. Control information may include resourceassignments and protocol controls. Data may include protocol data and/oroperational data. In some embodiments, the BSs 105 and the UEs 115 maycommunicate using self-contained subframes. A self-contained subframemay include a portion for DL communication and a portion for ULcommunication. A self-contained subframe can be DL-centric orUL-centric. A DL-centric subframe may include a longer duration for DLcommunication than UL communication. A UL-centric subframe may include alonger duration for UL communication than UL communication.

In an embodiment, a UE 115 attempting to access the network 100 mayperform an initial cell search by detecting a primary synchronizationsignal (PSS) from a BS 105. The PSS may enable synchronization of periodtiming and may indicate a physical layer identity value. The UE 115 maythen receive a secondary synchronization signal (SSS). The SSS mayenable radio frame synchronization, and may provide a cell identityvalue, which may be combined with the physical layer identity value toidentify the cell. The SSS may also enable detection of a duplexing modeand a cyclic prefix length. Some systems, such as TDD systems, maytransmit an SSS but not a PSS. Both the PSS and the SSS may be locatedin a central portion of a carrier, respectively. After receiving the PSSand SSS, the UE 115 may receive a master information block (MIB), whichmay be transmitted in the physical broadcast channel (PBCH). The MIB maycontain system bandwidth information, a system frame number (SFN), and aPhysical Hybrid-ARQ Indicator Channel (PHICH) configuration. Afterdecoding the MIB, the UE 115 may receive one or more system informationblocks (SIBs). For example, SIB1 may contain cell access parameters andscheduling information for other SIBs. Decoding SIB1 may enable the UE115 to receive SIB2. SIB2 may contain radio resource configuration (RRC)configuration information related to random access channel (RACH)procedures, paging, physical uplink control channel (PUCCH), physicaluplink shared channel (PUSCH), power control, SRS, and cell barring.After obtaining the MIB and/or the SIBs, the UE 115 can perform randomaccess procedures to establish a connection with the BS 105. Afterestablishing the connection, the UE 115 and the BS 105 can enter anormal operation stage, where operational data may be exchanged.

In some embodiments, the UEs 115 and the BSs 105 may be operated bymultiple network operators or network operating entities and may operatein a shared radio frequency spectrum, which may include licensed orunlicensed frequency bands. The shared spectrum may be time-partitionedfor sharing among the multiple network operating entities to facilitatecoordinated communication. For example, in the network 100, the BS 105 aand the UE 115 a may be associated with one network operating entity,while the BS 105 b and the UE 115 b may be associated with anothernetwork operating entity. By time-partitioning the shared spectrumaccording to network operating entities, the communications between theBS 105 a and the UE 115 a and the communications between the BS 105 band the UE 115 b may each occur during respective time periods and mayavail themselves of an entirety of a designated shared spectrum.

To support coordinated access of the shared spectrum, a BS 105 or anentity of the core network 130 may act as a central arbitrator to manageaccess and coordinate the partitioning of resources among differentnetwork operating entities operating within the network 100. In someembodiments, the central arbitrator may include a spectrum access system(SAS). In addition, the transmissions from the multiple networkoperating entities can be time synchronized to facilitate thecoordination.

In some embodiments, the network 100 may be operated over a spectrumowned by a spectrum owner. For example, the BSs 105 a, 105 b, and 105 care operated by a spectrum owner, while the BS 105 d is operated by alocal operating entity. The spectrum owner may allow the local operatingentity to request a temporary use of the spectrum. For example, the BS105 d may rent the spectrum in a local geographic area of the BS 105 dfor a period of time to deliver a service to the UE 115 d, as describedin greater detail herein.

FIGS. 2, 3A, and 3B illustrate a spectrum renting scenario, where alocal operator rents a spectrum from a spectrum owner for acommunication session in a local geographic area of the local operator.FIG. 2 illustrates a wireless communication network 200 that implementsspectrum renting according to embodiments of the present disclosure.FIG. 3A illustrates a spectrum usage scenario 310 according toembodiments of the present disclosure. FIG. 3B illustrates a spectrumusage scenario 320 with a spectrum rental according to embodiments ofthe present disclosure. In FIGS. 3A and 3B, the x-axes represent time insome constant units, and the y-axes represent frequency in some constantunits.

The network 200 may be similar to the network 100. FIG. 2 illustratesthree BSs (e.g., BSs 210 and 220) and two UEs (e.g., UEs 212 and 222)for purposes of simplicity of discussion, though it will be recognizedthat embodiments of the present disclosure may scale to many more UEsand/or BSs. The BSs 210 and 220 are similar to the BSs 105. The UEs 212and 222 are similar to the UEs 115. As an example, a spectrum owner ownsa spectrum 301 across geographic areas 202 a and 202 b. The spectrumowner operates the BSs 210 and the UE 212. The spectrum owner BS 210 aand the UE 212 are in communication with each other via a link 214(e.g., the links 125) over the spectrum 301 in the geographic area 202a. The spectrum owner BS 210 b is located in a geographic area 202 b. Alocal operator (e.g., a local business) operates the BS 220 in ageographic area 204 within the geographic area 202 b. The UE 222 islocated in the geographic area 204. The UE 222 may be operated by anyoperator, for example, the spectrum owner or another operator.

In the network 200, the spectrum owner may share the spectrum 301 withthe local operator. For example, the spectrum 301 may betime-partitioned into a plurality of transmission opportunities (TXOPs)302, where the sharing may be in units of TXOPs 302. Under normaloperating conditions, the spectrum owner may access the spectrum 301 asa primary user with guaranteed access to the spectrum while the localoperator may share the spectrum 301 as a secondary user withopportunistic access to the spectrum. For example, a TXOP 302 mayinclude a channel sensing period 304 and a transmission period 306. Aprimary user may transmit a reservation signal in the channel sensingperiod 304 to reserve a following transmission period 306. A secondaryuser may listen to the channel (e.g., the spectrum) andopportunistically access the spectrum when the spectrum is not occupiedby the primary user. As an example, the local operator BS 220 rents thespectrum 301 in the geographic area 204 for a communication session toserve the UE 222. A communication session may span a number of TXOPs 302(e.g., in a time period 340). As shown, the local operator BS 220 andthe UE 222 are in communication via a link 224 over the spectrum 301.

In an embodiment, the local operator BS 220 may be a wireless accesspoint (AP) and the UE 222 may begin communication over an unlicensedspectrum (e.g., a WiFi spectrum). However, the unlicensed spectrum maybe overcrowded, and thus the local operator BS 220 may not be able toprovide the service quality requested by the UE 222. In some instances,the local operator BS 220 may also share the spectrum 301 as a secondaryuser to improve the service quality. To further guarantee the requestedservice quality, the local operator BS 220 may rent the spectrum 301 fora time period or a communication session from the spectrum owner. Therenting promotes the local operator BS 220 and the UE 222 to primaryusers of the spectrum 301 in the geographic area 204. The renting isdynamically initiated based on a communication request, for example,from the UE 222. The renting is for a duration of time including anumber of TXOPs 302. The local operator BS 220 may communicate with theUE 222 using any suitable wireless communication technology that maycoexist with the spectrum owner's radio access technology. Since thespectrum owner BS 210 b is close to the geographic area 204, the rentingmay downgrade or demote the spectrum owner to a secondary user in thegeographic area 202 b. Since the BS 210 a and the UE 212 are in adifferent geographic area 202 a, the BS 210 a and the UE 212 may remainas the primary user.

In an embodiment, the UE 222 may be operated by the spectrum owner.However, the UE 222 may be located farther away from the spectrum ownerBSs 210 than from the local operator BS 220. Thus, the UE 222 may gain abetter service quality from the local operator BS 220 than from thespectrum owner BSs 210. As such, the UE 222 may request the service fromthe local operator BS 220 instead.

In an embodiment, the local operator BS 220 may negotiate the spectrumrental with a central unit 240 or server of the spectrum owner viabackhaul links 242 (e.g., the backhaul links 132). The central unit 240may be a server of the spectrum owner or a server of a controllingentity of the spectrum 301. The central unit 240 may include hardwareand/or software components configured to instruct the local operator BS220 and the UE 222 requesting the rental to transmit measurement signalsfor interference management. The central unit 240 may instruct thespectrum owner BSs 210 and UE 212 to measure the measurement signals.The measurement signals may include spectrum reservation signals, SRSs,and CSI-RSs, and/or any suitable reference signals. The central unit 240may determine the amount of interference from the local operator BS 220and the UE 222 to the spectrum owner BSs 210 and UE 212 based on themeasurements. The central unit 240 may determine whether to grant therental based on the expected interference and/or other information, suchas the expected network traffic load in the spectrum owner networkwithin the geographic area 204. In some other embodiments, a spectrumowner BS 210 may act as a central unit. In such embodiments, the localoperator BS 220 and/or the UE 222 may negotiate with the spectrum ownerBS 210 over a wireless link.

The scenario 310 illustrates the spectrum usage in the geographic area202 a during a time T0 to a time T4. The scenario 320 illustrates thespectrum usage in the geographic area 202 b during the same time periodfrom the time T0 to the time T4. As an example, the local operator BS220 rents the spectrum 301 for a rental time period 340 between a timeT1 and a time T3. The rental time period 340 includes two TXOPs 302. Insome other embodiments, the rental time period 340 can include anysuitable number of TXOPs 302, such as ten, twenty-five, fifty, or ahundred. For example, each TXOP 302 may include a duration of about 10ms to about 40 ms and the rental time period 340 may include a durationof about one second, a few seconds, or a few minutes.

In the scenario 310, the spectrum owner remains as the primary user fromthe time T1 to the time T4 (e.g., including the rental time period 340)in the geographic area 202 a. The spectrum owner BS 210 a and thespectrum owner UE 212 communicate signaling 312 of the spectrum ownerduring the channel sensing periods 304 and data 330 during thetransmission periods 306.

In the scenario 320, the local operator is promoted to be a primary userin the rental time period 340 in the geographic area 204. The localoperator BS 220 and the UE 222 communicate signaling 322 of the localoperator and data 330 in the time period 340. The spectrum owner isdemoted to be a secondary user in the rental time period 340 in thegeographic area 202 b. Thus, the local operator BS 220 has guaranteedaccess to the spectrum 301 during the time period 340, where thespectrum owner BS 210 b may yield spectrum access to the local operatorBS 220 and opportunistically share the spectrum 301 when not in use bythe local operator BS 220. The spectrum owner BS 210 b may revert to bea primary user after the rental time period 340 has ended (e.g., afterthe time T3).

In addition to requesting a temporary use or renting of a spectrum froma spectrum owner, a local operating entity may request time resourcesfrom the spectrum owner to broadcast or advertise services provided bythe local operating entity so that a UE (e.g., the UEs 212 and 222) inproximity of the local operating entity may discover the services.Alternatively, a local operating entity may advertise services in acommon or shared frequency band and deliver services in a frequency bandrented from a spectrum owner. Mechanisms for local service advertisingand discovery are described in greater detail herein.

FIG. 4 is a block diagram of an exemplary UE 400 according toembodiments of the present disclosure. The UE 400 may be a UE 115, 212,or 222 as discussed above. As shown, the UE 400 may include a processor402, a memory 404, a service discovery module 408, a transceiver 410including a modem subsystem 412 and a radio frequency (RF) unit 414, andone or more antennas 416. These elements may be in direct or indirectcommunication with each other, for example via one or more buses.

The processor 402 may include a central processing unit (CPU), a digitalsignal processor (DSP), an application-specific integrated circuit(ASIC), a controller, a field programmable gate array (FPGA) device,another hardware device, a firmware device, or any combination thereofconfigured to perform the operations described herein. The processor 402may also be implemented as a combination of computing devices, e.g., acombination of a DSP and a microprocessor, a plurality ofmicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration.

The memory 404 may include a cache memory (e.g., a cache memory of theprocessor 402), random access memory (RAM), magnetoresistive RAM (MRAM),read-only memory (ROM), programmable read-only memory (PROM), erasableprogrammable read only memory (EPROM), electrically erasableprogrammable read only memory (EEPROM), flash memory, solid state memorydevice, hard disk drives, other forms of volatile and non-volatilememory, or a combination of different types of memory. In an embodiment,the memory 404 includes a non-transitory computer-readable medium. Thememory 404 may store instructions 406. The instructions 406 may includeinstructions that, when executed by the processor 402, cause theprocessor 402 to perform the operations described herein with referenceto the UEs 115, 212, and 222 in connection with embodiments of thepresent disclosure. Instructions 406 may also be referred to as code.The terms “instructions” and “code” should be interpreted broadly toinclude any type of computer-readable statement(s). For example, theterms “instructions” and “code” may refer to one or more programs,routines, sub-routines, functions, procedures, etc. “Instructions” and“code” may include a single computer-readable statement or manycomputer-readable statements.

The service discovery module 408 may be used for various aspects of thepresent disclosure. For example, the service discovery module 408 isconfigured to perform network synchronization, searches for localservices provided by local operating entities, requests for localservices from local operating entities, and communicate with localoperating entities, as described in greater detail herein.

As shown, the transceiver 410 may include the modem subsystem 412 andthe RF unit 414. The transceiver 410 can be configured to communicatebi-directionally with other devices, such as the BSs 105, 210, and 220.The modem subsystem 412 may be configured to modulate and/or encode thedata from the memory 404 and/or the service discovery module 408according to a modulation and coding scheme (MCS), e.g., a low-densityparity check (LDPC) coding scheme, a turbo coding scheme, aconvolutional coding scheme, a digital beamforming scheme, etc. The RFunit 414 may be configured to process (e.g., perform analog to digitalconversion or digital to analog conversion, etc.) modulated/encoded datafrom the modem subsystem 412 (on outbound transmissions) or oftransmissions originating from another source such as a UE 212 and 222or a BS 210 and 220. The RF unit 414 may be further configured toperform analog beamforming in conjunction with the digital beamforming.Although shown as integrated together in transceiver 410, the modemsubsystem 412 and the RF unit 414 may be separate devices that arecoupled together at the UE 115, 212, or 222 to enable the UE 115, 212,or 222 to communicate with other devices.

The RF unit 414 may provide the modulated and/or processed data, e.g.data packets (or, more generally, data messages that may contain one ormore data packets and other information), to the antennas 416 fortransmission to one or more other devices. This may include, forexample, transmission of spectrum reservation signals, CSI-RSs, SRSs,service request signals according to embodiments of the presentdisclosure. The antennas 416 may further receive data messagestransmitted from other devices. The antennas 416 may provide thereceived data messages for processing and/or demodulation at thetransceiver 410. The antennas 416 may include multiple antennas ofsimilar or different designs in order to sustain multiple transmissionlinks. The RF unit 414 may configure the antennas 416.

FIG. 5 is a block diagram of an exemplary BS 500 according toembodiments of the present disclosure. The BS 500 may be a BS 105, 210,or 220 as discussed above. A shown, the BS 500 may include a processor502, a memory 504, a spectrum sharing module 508, a service provisioningmodule 509, a transceiver 510 including a modem subsystem 512 and a RFunit 514, and one or more antennas 516. These elements may be in director indirect communication with each other, for example via one or morebuses.

The processor 502 may have various features as a specific-typeprocessor. For example, these may include a CPU, a DSP, an ASIC, acontroller, a FPGA device, another hardware device, a firmware device,or any combination thereof configured to perform the operationsdescribed herein. The processor 502 may also be implemented as acombination of computing devices, e.g., a combination of a DSP and amicroprocessor, a plurality of microprocessors, one or moremicroprocessors in conjunction with a DSP core, or any other suchconfiguration.

The memory 504 may include a cache memory (e.g., a cache memory of theprocessor 502), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, asolid state memory device, one or more hard disk drives, memristor-basedarrays, other forms of volatile and non-volatile memory, or acombination of different types of memory. In some embodiments, thememory 504 may include a non-transitory computer-readable medium. Thememory 504 may store instructions 506. The instructions 506 may includeinstructions that, when executed by the processor 502, cause theprocessor 502 to perform operations described herein. Instructions 506may also be referred to as code, which may be interpreted broadly toinclude any type of computer-readable statement(s) as discussed abovewith respect to FIG. 5.

The spectrum sharing module 508 and the service provisioning module 509may be used for various aspects of the present disclosure. In anembodiment, when the BS 500 functions as a local operator BS (e.g., theBS 220), the spectrum sharing module 508 is configured to requestresources from a spectrum owner for service advertising and delivery andreceive resource allocations from the spectrum owner. The serviceprovisioning module 509 is configured to advertise and deliver localservices based on the resource allocations, as described in greaterdetail herein.

In an embodiment, when the BS 500 functions as a spectrum owner BS(e.g., the BSs 210), the spectrum sharing module 508 is configured tocoordinate with a spectrum owner server to allocate resources in aspectrum for a local operating entity to advertise and deliver servicesusing the spectrum. The service provisioning module 509 is configured tobroadcast network information (e.g., PSS, SSS, MIBs, SIBs, and localservice advertising time periods) and/or facilitate service deliveryfrom local operating entities, as described in greater detail herein.

As shown, the transceiver 510 may include the modem subsystem 512 andthe RF unit 514. The transceiver 510 can be configured to communicatebi-directionally with other devices, such as the UEs 115, 212, and 222and/or another core network element. The modem subsystem 512 may beconfigured to modulate and/or encode data according to a MCS, e.g., aLDPC coding scheme, a turbo coding scheme, a convolutional codingscheme, a digital beamforming scheme, etc. The RF unit 514 may beconfigured to process (e.g., perform analog to digital conversion ordigital to analog conversion, etc.) modulated/encoded data from themodem subsystem 512 (on outbound transmissions) or of transmissionsoriginating from another source such as a UE 212 or 222. The RF unit 514may be further configured to perform analog beamforming in conjunctionwith the digital beamforming. Although shown as integrated together intransceiver 510, the modem subsystem 512 and the RF unit 514 may beseparate devices that are coupled together at the BS 105 to enable theBS 105 to communicate with other devices.

The RF unit 514 may provide the modulated and/or processed data, e.g.data packets (or, more generally, data messages that may contain one ormore data packets and other information), to the antennas 516 fortransmission to one or more other devices. This may include, forexample, transmission of information to complete attachment to a networkand communication with a camped UE 212 according to embodiments of thepresent disclosure. The antennas 516 may further receive data messagestransmitted from other devices and provide the received data messagesfor processing and/or demodulation at the transceiver 510. The antennas516 may include multiple antennas of similar or different designs inorder to sustain multiple transmission links.

FIG. 6 illustrates a block diagram of an exemplary central unit 600according to embodiments of the present disclosure. The central unit 600may be a spectrum owner server, a central unit 240 or a controllingentity of a spectrum as discussed above. A shown, the central unit 600may include a processor 602, a memory 604, a spectrum allocation module608, and a transceiver 610 including a modem subsystem 612 and afrontend unit 614. These elements may be in direct or indirectcommunication with each other, for example via one or more buses.

The processor 602 may have various features as a specific-typeprocessor. For example, these may include a CPU, a DSP, an ASIC, acontroller, a FPGA device, another hardware device, a firmware device,or any combination thereof configured to perform the operationsdescribed herein. The processor 602 may also be implemented as acombination of computing devices, e.g., a combination of a DSP and amicroprocessor, a plurality of microprocessors, one or moremicroprocessors in conjunction with a DSP core, or any other suchconfiguration.

The memory 604 may include a cache memory (e.g., a cache memory of theprocessor 602), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, asolid state memory device, one or more hard disk drives, memristor-basedarrays, other forms of volatile and non-volatile memory, or acombination of different types of memory. In some embodiments, thememory 604 may include a non-transitory computer-readable medium. Thememory 604 may store instructions 606. The instructions 606 may includeinstructions that, when executed by the processor 602, cause theprocessor 602 to perform operations described herein. Instructions 606may also be referred to as code, which may be interpreted broadly toinclude any type of computer-readable statement(s) as discussed abovewith respect to FIG. 6.

The spectrum allocation module 608 may be used for various aspects ofthe present disclosure. For example, the spectrum allocation module 608is configured to receive spectrum use requests for service advertisingand/or delivery, determine spectrum allocation, and grant or denyspectrum use requests, as described in greater detail herein.

As shown, the transceiver 610 may include the modem subsystem 612 andthe frontend unit 614. The transceiver 610 can be configured tocommunicate bi-directionally with other devices, such as the BSs 105,210, and 220 and/or another core network element. The modem subsystem612 may be configured to modulate and/or encode data according to a MCS,e.g., a LDPC coding scheme, a turbo coding scheme, a convolutionalcoding scheme, etc. The frontend unit 614 may includeelectrical-to-optical (E/O) components and/or optical-to-electrical(O/E) components that convert an electrical signal to an optical signalfor transmission to a BS such as the BSs 105, 210, and 220 and/orreceive an optical signal from the BS and convert the optical signalinto an electrical signal, respectively. The frontend unit 614 may beconfigured to process (e.g., perform analog to digital conversion ordigital to analog conversion, optical to electrical conversion orelectrical to optical conversion, etc.) modulated/encoded data from themodem subsystem 612 (on outbound transmissions) or of transmissionsoriginating from another source such as a backend or core network.Although shown as integrated together in transceiver 610, the modemsubsystem 612 and the frontend unit 614 may be separate devices that arecoupled together at the central unit 600 to enable the central unit 600to communicate with other devices. The frontend unit 614 may transmitoptical signal carrying the modulated and/or processed data over anoptical link such as the links 242. The frontend unit 614 may furtherreceive optical signals carrying data messages and provide the receiveddata messages for processing and/or demodulation at the transceiver 610.

FIG. 7 is a signaling diagram of a synchronous service advertising anddiscovery method 700 according to embodiments of the present disclosure.The method 700 is implemented among a spectrum owner BS, a localoperator BS, and a UE. The spectrum operator BS and the local operatorBS may be similar to the BSs 105, 210, 220, and 500. The UE may besimilar to the UEs 115, 212, 222, and 400. For instance, in the contextof the network 200, the spectrum operator BS may correspond to the BS210 b, the local operator BS may correspond to the BS 220, and the UEmay correspond to the UE 222. Steps of the method 700 can be executed bycomputing devices (e.g., a processor, processing circuit, and/or othersuitable component) of the spectrum owner BS, the local operator BS, andthe UE. As illustrated, the method 700 includes a number of enumeratedsteps, but embodiments of the method 700 may include additional stepsbefore, after, and in between the enumerated steps. In some embodiments,one or more of the enumerated steps may be omitted or performed in adifferent order.

In the method 700, the spectrum owner BS, the local operator BS, and theUE are time synchronized. The local operator BS advertises services in aspectrum (e.g., the spectrum 301) using resources allocated by aspectrum owner or a controlling entity of the spectrum that operates thespectrum owner BS.

At step 710, the local operator BS negotiates resources with thespectrum owner BS for service advertising in a spectrum (e.g., thespectrum 301) of the spectrum owner BS. The negotiation may becommunicated via spectrum owner server or a controlling entity of thespectrum over a backhaul link (e.g., the backhaul links 132 and 242).The negotiation may include time periods, transmission periodicities,pricing, and/or other agreements. For example, the spectrum owner maygrant certain time periods at a certain periodicities for the localoperator BS for service advertising. Mechanisms for the negotiation aredescribed in greater detail herein.

At step 715, the spectrum owner BS transmits a network informationsignal in the spectrum, for example, in a broadcast mode. The networkinformation signal may be similar to the PBCH signals in LTE. Thenetwork information signal may include synchronization signals (e.g.,PSS and SSS), system information (e.g., MIBs and SIBs), and/or localservice advertising time periods. The local service advertising periodscorrespond to time periods negotiated in the step 710. In someembodiments, multiple local operating entities may negotiate with thespectrum owner for service advertising resources. The networkinformation signal may indicate local service advertising time periodsand/or periodicities allocated for all local operating entities. Thespectrum owner BS may transmit the network information signalperiodically. In an embodiment, the network information signals mayreach a wide coverage area, and thus allows a local operator network toleverage the network information signals instead of transmittingseparate network information signals and/or synchronization signals.

At step 720, the local operator BS transmits a service advertisingsignal in the spectrum, for example, in a broadcast mode, based on thetime periods allocated by the spectrum owner in the step 710. Theservice advertising signal may indicate an availability of a serviceprovided by the local operator. For example, the local operator BS maysynchronize the local operator BS timings to the network informationsignals of the spectrum owner BS. The timings of the network informationsignals and the service advertising signals are described in greaterdetail herein. The local operator BS may transmit the serviceadvertising signal periodically based on the negotiation.

At step 725, the UE synchronizes to the network information signal(e.g., the PSS and the SSS) of the spectrum owner BS. The UE may alsoobtain network information from the network information signal. Forexample, the UE may obtain local service advertising time periods fromthe network information signal. The UE may also perform random accesschannel (RACH) procedures with the spectrum owner BS to obtain timingadvance information.

At step 730, the UE monitors for a service advertising signal from alocal operator, for example, based on the local service advertising timeperiods indicated by the network information signal. For example, the UEmay detect the service advertising signal from the local operator BS.

At step 735, the UE transmits a service request to the local operator BSbased on the service advertising signal. In an embodiment, the servicerequest may include multiple message exchanges between the UE and thelocal operator BS.

At step 740, the local operator BS negotiates resources with thespectrum owner BS for a temporary use of the spectrum for servicedelivery based on the service request. The negotiation may becommunicated via the backhaul (e.g., to a spectrum owner server) and mayinclude a time period 702 (e.g., the time period 340) and/or pricing.The time period 702 may correspond to a communication session forserving the UE.

At step 745, the local operator BS and the UE may communicate trafficwith each other in the spectrum during the negotiated time period 702,for example, as a primary user of the spectrum.

At step 750, the spectrum owner BS may listen to the channel (e.g., thespectrum), during the negotiated time period 702, for example,functioning as a secondary user of the spectrum and opportunisticallyuse the spectrum when the local operator BS is not using the spectrum.

As can be seen in the method 700, the spectrum owner BS, the localoperator BS, and the UE are time synchronized and the local operator BSadvertise services in the spectrum based on an allocation from thespectrum owner. Thus, the method 700 may be referred to as asynchronous-in-band service discovery method.

FIG. 8 is a timing diagram illustrating a broadcast channel transmissionscenario 800 according to embodiments of the present disclosure. In FIG.8, the x-axis represents time in some constant units. The scenario 800may correspond to the network information signal transmissions of thespectrum owner BS and the service advertising signal transmissions ofthe local operator BS in the method 700.

As an example, a spectrum owner BS may transmit network informationsignals 810 (e.g., PSS and/or SSS) in time periods 802 with aperiodicity 812. The spectrum owner may allocate time periods 804 forlocal service advertising. The spectrum owner may allocate atransmission periodicity 822 to a first local operating entity fortransmitting service advertising signals 820 and another transmissionperiodicity 832 to a second local operating entity for transmittingservice advertising signals 830. Thus, the time periods 804 a arededicated time periods for the first local operating entity and the timeperiods 804 b are dedicated time periods for the second local operatingentity.

The spectrum owner may configure the transmission periodicities 812,822, and 832 to any be any suitable periodicities. For example, thenetwork information signal 810 may be a synchronization signal and theperiodicity 812 may be about 5 milliseconds (ms) or about 10 ms. Thespectrum owner may allocate local service advertising time periods 804at intervals of about 20 ms. The spectrum owner may allocate a localservice discovery transmission periodicity 822 of about 40 ms for thefirst network operating entity and a local service discoverytransmission periodicity 832 of about 100 ms for the second networkoperating entity. The spectrum owner may configure the transmissionperiodicities 822 and 832 based on a pricing negotiation with thecorresponding first and second network operating entities and/or basedon network conditions or traffic demands of the spectrum owner.

FIG. 9 is a signaling diagram of a spectrum allocation method 900according to embodiments of the present disclosure. The method 900 isimplemented between a spectrum owner BS and a local operator BS, and aUE. The spectrum operator BS and the local operator BS may be similar tothe BSs 105, 210, 220, and 500. Steps of the method 900 can be executedby computing devices (e.g., a processor, processing circuit, and/orother suitable component) of the spectrum owner BS and the localoperator BS. As illustrated, the method 900 includes a number ofenumerated steps, but embodiments of the method 900 may includeadditional steps before, after, and in between the enumerated steps. Insome embodiments, one or more of the enumerated steps may be omitted orperformed in a different order.

In the method 900, the spectrum owner BS communicates with the localoperator BS via a backhaul link (e.g., the backhaul links 132 and 242)and a controlling entity (e.g., the central units 240 and 600) of aspectrum of the spectrum owner BS.

At step 910, the local operator BS transmits an allocation request tothe spectrum owner BS. For example, the allocation request may indicatea request to broadcast service availabilities (e.g., the signals 820 and830) in a spectrum (e.g., the spectrum 301) controlled by the spectrumcontrolling entity.

At step 915, the spectrum owner BS determines an allocation in thespectrum for the local operator BS based on the allocation request,pricing agreements, and/or network conditions. The spectrum owner BS maycoordinate with the controlling entity.

At step 920, the spectrum owner BS transmits an allocation grant to thelocal operator BS. The allocation grant may include a networkconfiguration indicating time periods and/or transmission periodicitiesassigned to the local operator BS for service advertising.

In some embodiments, at step 925, the spectrum owner BS may dynamicallymodify the service advertising allocation. For example, when additionallocal operating entities requests for service advertising time periods,the spectrum owner BS may allocate a different service advertising timeperiod and/or a different transmission periodicity to the local operatorBS. At step 930, the spectrum owner BS transmits an allocationmodification instruction to instruct the local operator BS to modify theservice advertising signal transmission time period or periodicitiesbased on the reconfiguration.

In some embodiments, at step 935, the spectrum owner BS may determine tosuspend service advertising signal transmissions from the local operatorBS, for example, due to network conditions or other agreements. At step940, the spectrum owner BS transmits a service discovery suspensioninstruction to instruct the local operator BS to suspend servicediscovery transmissions in the spectrum.

In an embodiment, the steps 910, 915, and 920 may correspond to thenegotiation in the step 710 in the method 700. In addition, the localoperator BS may use substantially similar steps as the steps 910, 915,and 920 for the negotiation in the step 740 of the method 700. Forexample, the allocation request in the step 910 may alternativelyindicate a request to use the spectrum temporarily for a period of timeto deliver a service (e.g., the data 330) to a UE (e.g., the UEs 115,222, 400) in proximity of the local operator BS.

FIG. 10 is a signaling diagram of an asynchronous service discoverymethod 1000 according to embodiments of the present disclosure. Themethod 1000 is implemented among a spectrum owner BS, a local operatorBS, and a UE. The spectrum operator BS and the local operator BS may besimilar to the BSs 105, 210, 220, and 500. The UE may be similar to theUEs 115, 212, 222, and 400. For instance, in the context of the network200, the spectrum operator BS may correspond to the BS 210 b, the localoperator BS may correspond to the BS 220, and the UE may correspond tothe UE 222. Steps of the method 1000 can be executed by computingdevices (e.g., a processor, processing circuit, and/or other suitablecomponent) of the spectrum owner BS, the local operator BS, and the UE.As illustrated, the method 1000 includes a number of enumerated steps,but embodiments of the method 1000 may include additional steps before,after, and in between the enumerated steps. In some embodiments, one ormore of the enumerated steps may be omitted or performed in a differentorder.

In the method 1000, the local operator BS advertises a service in acommon spectrum (e.g., an unlicensed spectrum or a shared spectrum)available for communications at least by the local operator BS and theUE and delivers the service in another spectrum (e.g., the spectrum 301)that is controlled by a spectrum owner or a controlling entity of thespectrum that operates the spectrum owner BS. Thus, the serviceadvertising or discovery is asynchronous with respect to the spectrumowner BS.

At step 1010, the local operator BS transmits a service advertisingsignal in a first frequency band. The first frequency band may be anunlicensed spectrum (e.g., a WiFi spectrum) or a shared spectrum (e.g.,a 3.5 GHz spectrum) different than a second frequency band (e.g., thespectrum 301) owned by a spectrum owner operating the spectrum owner BS.The service advertising signal may indicate an available of a serviceprovided by the local operator BS. When the first frequency band is in aWiFi spectrum, the service advertising signal may indicate an SSID ofthe service in a WLAN. When the first frequency band is in a 3.5 GHzspectrum, the local operator BS may function as GAA tier and mayadvertise the services when the channel is idle.

At step 1020, the UE monitors for a service advertising signal from alocal operator in the first frequency band. For example, the UE maydetect the service advertising signal from the local operator BS.

At step 1030, the UE transmits a service request to the local operatorBS based on the service advertising signal. The service request mayinclude multiple message exchanges between the UE and the local operatorBS.

At step 1040, the local operator BS negotiates resources with thespectrum owner BS for a temporary use of the second frequency band forservice delivery based on the service request. The negotiation may becommunicated via the backhaul (e.g., to a spectrum owner server) and mayinclude a time period 1002 (e.g., the time period 340) and/or pricing.The time period 1002 may correspond to a communication session forserving the UE.

At step 1050, the local operator BS and the UE may communicate trafficwith each other in the spectrum during the negotiated time period 1002,for example, as a primary user of the spectrum.

At step 1060, the spectrum owner BS may listen to the channel (e.g., thespectrum), during the negotiated time period 1002, for example,functioning as a secondary user of the spectrum and opportunisticallyuse the spectrum when the local operator BS is not using the spectrum.

While the method 1000 illustrates service delivery in the secondfrequency band, in some embodiments, the local operator BS may deliver aportion of the service in the first frequency band prior to switching tothe second frequency band.

FIG. 11 is a flow diagram of a synchronous service discovery method 1100according to embodiments of the present disclosure. Steps of the method1100 can be executed by a computing device (e.g., a processor,processing circuit, and/or other suitable component) of a wirelesscommunication device, such as the UEs 115, 222, 222, and 400. The method1100 may employ similar mechanisms as in the methods 700 and 900described with respect to FIGS. 7 and 9, respectively. As illustrated,the method 1100 includes a number of enumerated steps, but embodimentsof the method 1100 may include additional steps before, after, and inbetween the enumerated steps. In some embodiments, one or more of theenumerated steps may be omitted or performed in a different order.

At step 1110, the method 1100 includes receiving, from a first wirelesscommunication device, a network information signal (e.g., the networkinformation signal 810) in a spectrum (e.g., the spectrum 301). Thefirst wireless communication device may be associated with a controllingentity of the spectrum. For example, the first wireless communicationdevice may be a spectrum owner BS (e.g., the BSs 210).

At step 1120, the method 1100 includes receiving, from a second wirelesscommunication device, a service advertising signal based on at least asynchronization to the network information signal. The second wirelesscommunication device may be associated with a local operating entity.For example, the second wireless communication device is a localoperator BS (e.g., the BS 220). The service advertising signal indicatesan availability of a service provided by the local operating entity.

At step 1130, the method 1100 includes transmitting, to the secondwireless communication device, a request for the service.

At step 1140, the method 1100 includes communicating, with the secondwireless communication device, a communication signal in the spectrumbased on a spectrum use grant from the first wireless communicationdevice. The communication signal is associated with the service.

FIG. 12 is a flow diagram of a synchronous service provisioning method1200 according to embodiments of the present disclosure. Steps of themethod 1200 can be executed by a computing device (e.g., a processor,processing circuit, and/or other suitable component) of a wirelesscommunication device, such as the BSs 105, 220, and 500. The wirelesscommunication device is associated with a local operating entity. Forexample, the wireless communication device is a local operator BS (e.g.,the BS 220). The method 1200 may employ similar mechanisms as in themethods 700 and 900 described with respect to FIGS. 7 and 8,respectively. As illustrated, the method 1200 includes a number ofenumerated steps, but embodiments of the method 1200 may includeadditional steps before, after, and in between the enumerated steps. Insome embodiments, one or more of the enumerated steps may be omitted orperformed in a different order.

At step 1210, the method 1200 includes obtaining a network configurationfor communication in a spectrum (e.g., the spectrum 301). The networkconfiguration may indicate a service advertising signal transmissiontime period allocated to the first wireless communication device. Thenetwork configuration may indicate a periodicity of the serviceadvertising signal transmission time period.

At step 1220, the method 1200 includes transmitting a serviceadvertising signal in the spectrum based on the network configuration.The service advertising signal is based on a synchronization to anetwork information signal transmitted by a second wirelesscommunication device. The second wireless communication device isassociated with a controlling entity of the spectrum. For example, thesecond wireless communication device is a spectrum operator BS (e.g.,the spectrum operator BSs 210). The service advertising signal indicatesan availability of a service provided by the local operating entity.

At step 1230, the method 1200 receives, from a UE (e.g., the UEs 115 and222), a request for the service.

At step 1240, the method 1200 includes transmitting, to the secondwireless communication device, a spectrum use request to use thespectrum for a time period (e.g., the time period 340 and 702) forproviding the service.

At step 1250, the method 1200 includes communicating, with the UE, acommunication signal in the spectrum during the time period. Thecommunication signal is associated with the service.

FIG. 13 is a flow diagram of a spectrum allocation method 1300 accordingto embodiments of the present disclosure. Steps of the method 1300 canbe executed by a computing device (e.g., a processor, processingcircuit, and/or other suitable component) of a wireless communicationdevice, such as the BSs 105, 210, 220, and 500. The wirelesscommunication device may be associated with a controlling entity of aspectrum (e.g., the spectrum 301). For example, the wirelesscommunication device is a spectrum operator BS (e.g., the spectrumoperator BS 210).). The method 1200 may employ similar mechanisms as inthe methods 700 and 900 described with respect to FIGS. 7 and 8,respectively. As illustrated, the method 1300 includes a number ofenumerated steps, but embodiments of the method 1300 may includeadditional steps before, after, and in between the enumerated steps. Insome embodiments, one or more of the enumerated steps may be omitted orperformed in a different order.

At step 1310, the method 1300 includes transmitting a networkinformation signal (e.g., the network information signal 810) in thespectrum. The network information signal includes a networkconfiguration indicating a service advertising signal transmission timeperiod allocated to a second wireless communication device. The secondwireless communication device is associated with a local operatingentity. For example, the second wireless communication device is a localoperator BS (e.g., the local operator BS 220).

At step 1320, the method 1300 includes refraining from communication inthe spectrum during the service advertising signal transmission timeperiod.

At step 1330, the method 1300 includes receiving a spectrum use requestfor the second wireless communication device to use the spectrum for atime period (e.g., the time periods 340 and 702).

At step 1340, the method 1300 includes monitoring, during the timeperiod, for a reservation from the second wireless communication device.

FIG. 14 is a flow diagram of an asynchronous service advertising anddiscovery method 1400 according to embodiments of the presentdisclosure. Steps of the method 1400 can be executed by a computingdevice (e.g., a processor, processing circuit, and/or other suitablecomponent) of a wireless communication device, such as the BSs 105, 210,220, and 500 and the UEs 115, 222, and 400. The method 1400 may employsimilar mechanisms as in method 1000 described with respect to FIG. 10.As illustrated, the method 1400 includes a number of enumerated steps,but embodiments of the method 1400 may include additional steps before,after, and in between the enumerated steps. In some embodiments, one ormore of the enumerated steps may be omitted or performed in a differentorder.

At step 1410, the method 1400 includes communicating, in a firstfrequency band, a service advertising signal indicating an availabilityof a service provided by a local operating entity. The first frequencyband may be in an unlicensed spectrum or a shared spectrum.

At step 1420, the method 1400 includes communicating, in a secondfrequency band, a communication signal during a time period (e.g., thetime periods 340 and 1002) based on a spectrum use grant from acontrolling entity of the second frequency band. The second frequencyband is in a spectrum (e.g., the spectrum 301) controlled by thecontrolling entity. The communication signal associated with theservice.

Information and signals may be represented using any of a variety ofdifferent technologies and techniques. For example, data, instructions,commands, information, signals, bits, symbols, and chips that may bereferenced throughout the above description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, or any combination thereof.

The various illustrative blocks and modules described in connection withthe disclosure herein may be implemented or performed with ageneral-purpose processor, a DSP, an ASIC, an FPGA or other programmablelogic device, discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed herein. A general-purpose processor may be a microprocessor,but in the alternative, the processor may be any conventional processor,controller, microcontroller, or state machine. A processor may also beimplemented as a combination of computing devices (e.g., a combinationof a DSP and a microprocessor, multiple microprocessors, one or moremicroprocessors in conjunction with a DSP core, or any other suchconfiguration).

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on acomputer-readable medium. Other examples and implementations are withinthe scope of the disclosure and appended claims. For example, due to thenature of software, functions described above can be implemented usingsoftware executed by a processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Also, as used herein, including in the claims, “or” as usedin a list of items (for example, a list of items prefaced by a phrasesuch as “at least one of” or “one or more of”) indicates an inclusivelist such that, for example, a list of [at least one of A, B, or C]means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

Further embodiments of the present disclosure include a method ofwireless communication, comprising receiving, by a user equipment (UE)from a first wireless communication device, a network information signalin a spectrum; receiving, by the UE from a second wireless communicationdevice, a service advertising signal based on at least a synchronizationto the network information signal, the service advertising signalindicating an availability of a service; and transmitting, by the UE tothe second wireless communication device, a request for the service,wherein the first wireless communication device and the second wirelesscommunication device are associated with different operating entities ofthe spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, wherein the secondwireless communication device is associated with a local operatingentity of the spectrum, and wherein the UE is positioned in a geographiccoverage area of the second wireless communication device. In someembodiments, wherein the network information signal indicates a serviceadvertising signal transmission time period, and wherein the methodfurther comprises monitoring for the service advertising signal duringthe service advertising signal transmission time period. In someembodiments, wherein the network information signal indicates aperiodicity of the service advertising signal transmission time period.In some embodiments, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the method further comprises receiving, by the UE from thefirst wireless communication device, another network information channelsignal indicating a modification to the periodicity of the serviceadvertising signal transmission time period. In some embodiments, themethod further comprises communicating, by the UE with the secondwireless communication device, a communication signal in the spectrumbased on a spectrum use grant from the first wireless communicationdevice, the communication signal associated with the service.

Further embodiments of the present disclosure include a method ofwireless communication, comprising obtaining, by a first wirelesscommunication device, a network configuration for communication in aspectrum; transmitting, by the first wireless communication device, aservice advertising signal in the spectrum based on the networkconfiguration, the service advertising signal being based on asynchronization to a network information signal transmitted by a secondwireless communication device, the service advertising signal indicatingan availability of a service; and receiving, by the first wirelesscommunication device from a user equipment (UE), a request for theservice, wherein the first wireless communication device and the secondwireless communication device are associated with different operatingentities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a local operating entity of the spectrum, wherein thesecond wireless communication device is associated with a controllingentity of the spectrum, and wherein the UE is positioned in a geographiccoverage area of the first wireless communication device. In someembodiments, wherein the obtaining includes requesting, by the firstwireless communication device, an allocation in the spectrum for aservice advertising signal transmission; and receiving, by the firstwireless communication device, the network configuration indicating aservice advertising signal transmission time period allocated to thefirst wireless communication device, and wherein the transmitting theservice advertising signal includes transmitting the service advertisingsignal during the service advertising signal transmission time period.In some embodiments, wherein the network configuration further indicatesa periodicity of the service advertising signal transmission timeperiod. In some embodiments, wherein the network information signalincludes a synchronization signal, and wherein the periodicity of theservice advertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the method further comprises receiving, by the firstwireless communication device, an instruction to modify the periodicityof the service advertising signal transmission time period. In someembodiments, the method further comprises receiving, by the firstwireless communication device, an instruction to suspend a subsequentservice advertising signal transmission. In some embodiments, the methodfurther comprises requesting, by the first wireless communicationdevice, an allocation in the spectrum for a time period to provide theservice; and communicating, by the first wireless communication devicewith the UE, a communication signal in the spectrum during the timeperiod, the communication signal associated with the service.

Further embodiments of the present disclosure include a method ofwireless communication, comprising transmitting, by a first wirelesscommunication device, a network information signal in a spectrum, thenetwork information signal including at least a synchronization signaland an indication of a service advertising signal transmission timeperiod allocated to a second wireless communication device; andrefraining, by the first wireless communication device, fromcommunicating in the spectrum during the service advertising signaltransmission time period, wherein the first wireless communicationdevice and the second wireless communication device are associated withdifferent operating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, and wherein thesecond wireless communication device is associated with a localoperating entity of the spectrum. In some embodiments, the methodfurther comprises receiving, by the first wireless communication device,a request for an allocation in the spectrum for the second wirelesscommunication device to transmit a service advertising signal; andtransmitting, by the first wireless communication device in response tothe request, a grant indicating a service advertising signaltransmission time period allocated to the second wireless communicationdevice. In some embodiments, wherein the grant indicates a periodicityof the service advertising signal transmission time period. In someembodiments, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the method further comprises transmitting, by the firstwireless communication device, an instruction to instruct the secondwireless communication device to modify the periodicity of the serviceadvertising signal transmission time period. In some embodiments, themethod further comprises transmitting, by the first wirelesscommunication device, an instruction to instruct the second wirelesscommunication device to suspend a subsequent service advertising signaltransmission. In some embodiments, the method further comprisesreceiving, by the first wireless communication device, a request for anallocation in the spectrum for a third wireless communication device totransmit a service advertising signal; and transmitting, by the firstwireless communication device in response to the request, a grantindicating another service advertising signal transmission time periodallocated to the third wireless communication device, wherein the secondwireless communication device and the third wireless communicationdevice are associated with different local operating entities. In someembodiments, the method further comprises receiving, by the firstwireless communication device, a spectrum use request for the secondwireless communication device to use the spectrum for a time period; andmonitoring, by the first wireless communication device during the timeperiod, for a reservation from the second wireless communication device.

Further embodiments of the present disclosure include a method ofwireless communication, comprising communicating, by a first wirelesscommunication device with a second wireless communication device in afirst frequency band, a service advertising signal indicating anavailability of a service in a second frequency band; and communicating,by the first wireless communication device with the second wirelesscommunication device in the second frequency band, a communicationsignal during a time period based on a spectrum use grant from acontrolling entity of the second frequency band, the communicationsignal associated with the service, wherein the first frequency band andthe second frequency band are different.

In some embodiments, wherein at least one of the first wirelesscommunication device or the second wireless communication device isassociated with a local operating entity of the second frequency band.In some embodiments, wherein the communicating the service advertisingsignal includes transmitting, by the first wireless communicationdevice, the service advertising signal, and wherein the method furthercomprises receiving, by the first wireless communication device from thesecond wireless communication device, a request for the service. In someembodiments, wherein the receiving the request includes receiving therequest in the first frequency band. In some embodiments, wherein thereceiving the request includes receiving the request in the secondfrequency band. In some embodiments, wherein the communicating theservice advertising signal includes receiving, by the first wirelesscommunication device from the second wireless communication device, theservice advertising signal, and wherein the method further comprisestransmitting, by the first wireless communication device to the secondwireless communication device, a request for the service. In someembodiments, wherein the transmitting the request includes transmittingthe request in the first frequency band. In some embodiments, whereinthe transmitting the request includes transmitting the request in thesecond frequency band. In some embodiments, wherein the first frequencyband is an unlicensed frequency band. In some embodiments, wherein thefirst frequency band is in a 3.5 gigahertz (GHz) spectrum.

Further embodiments of the present disclosure include an apparatuscomprising a transceiver configured to receive, from a first wirelesscommunication device, a network information signal in a spectrum;receive, from a second wireless communication device, a serviceadvertising signal based on at least a synchronization to the networkinformation signal, the service advertising signal indicating anavailability of a service; and transmit, to the second wirelesscommunication device, a request for the service, wherein the firstwireless communication device and the second wireless communicationdevice are associated with different operating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, wherein the secondwireless communication device is associated with a local operatingentity of the spectrum, and wherein the apparatus is positioned in ageographic coverage area of the second wireless communication device. Insome embodiments, wherein the network information signal indicates aservice advertising signal transmission time period, and wherein theapparatus further comprises a processor configured to monitor for theservice advertising signal during the service advertising signaltransmission time period. In some embodiments, wherein the networkinformation signal indicates a periodicity of the service advertisingsignal transmission time period. In some embodiments, wherein thenetwork information signal includes a synchronization signal, andwherein the periodicity of the service advertising signal transmissiontime period is different from a transmission periodicity of thesynchronization signal. In some embodiments, wherein the transceiver isfurther configured to receive, from the first wireless communicationdevice, another network information channel signal indicating amodification to the periodicity of the service advertising signaltransmission time period. In some embodiments, wherein the transceiveris further configured to communicate, with the second wirelesscommunication device, a communication signal in the spectrum based on aspectrum use grant from the first wireless communication device, thecommunication signal associated with the service.

Further embodiments of the present disclosure include an apparatuscomprising a processor configured to obtain a network configuration forcommunication in a spectrum; and a transceiver configured to transmit, aservice advertising signal in the spectrum based on the networkconfiguration, the service advertising signal being based on asynchronization to a network information signal transmitted by a secondwireless communication device, the service advertising signal indicatingan availability of a service; and receive, from a user equipment (UE), arequest for the service, wherein the apparatus and the second wirelesscommunication device are associated with different operating entities ofthe spectrum.

In some embodiments, wherein the apparatus is associated with a localoperating entity of the spectrum, wherein the second wirelesscommunication device is associated with a controlling entity of thespectrum, and wherein the UE is positioned in a geographic coverage areaof the apparatus. In some embodiments, wherein the processor is furtherconfigured to obtain the network configuration by requesting anallocation in the spectrum for a service advertising signaltransmission; and receiving the network configuration indicating aservice advertising signal transmission time period allocated to theapparatus, and wherein the service advertising signal is transmittedduring the service advertising signal transmission time period. In someembodiments, wherein the network configuration further indicates aperiodicity of the service advertising signal transmission time period.In some embodiments, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, wherein the transceiver is further configured to receive aninstruction to modify the periodicity of the service advertising signaltransmission time period. In some embodiments, wherein the transceiveris further configured to receive an instruction to suspend a subsequentservice advertising signal transmission. In some embodiments, whereinthe transceiver is further configured to request an allocation in thespectrum for a time period to provide the service; and communicate withthe UE, a communication signal in the spectrum during the time period,the communication signal associated with the service.

Further embodiments of the present disclosure include an apparatuscomprising a transceiver configured to transmit a network informationsignal in a spectrum, the network information signal including at leasta synchronization signal and an indication of a service advertisingsignal transmission time period allocated to a second wirelesscommunication device; and a processor configured to refrain fromcommunicating in the spectrum during the service advertising signaltransmission time period, wherein the apparatus and the second wirelesscommunication device are associated with different operating entities ofthe spectrum.

In some embodiments, wherein the apparatus is associated with acontrolling entity of the spectrum, and wherein the second wirelesscommunication device is associated with a local operating entity of thespectrum. In some embodiments, wherein the transceiver is furtherconfigured to receive a request for an allocation in the spectrum forthe second wireless communication device to transmit a serviceadvertising signal; and transmit, in response to the request, a grantindicating a service advertising signal transmission time periodallocated to the second wireless communication device. In someembodiments, wherein the grant indicates a periodicity of the serviceadvertising signal transmission time period. In some embodiments,wherein the network information signal includes a synchronizationsignal, and wherein the periodicity of the service advertising signaltransmission time period is different from a transmission periodicity ofthe synchronization signal. In some embodiments, wherein the transceiveris further configured to transmit an instruction to instruct the secondwireless communication device to modify the periodicity of the serviceadvertising signal transmission time period. In some embodiments,wherein the transceiver is further configured to transmit an instructionto instruct the second wireless communication device to suspend asubsequent service advertising signal transmission. In some embodiments,wherein the transceiver is further configured to receive a request foran allocation in the spectrum for a third wireless communication deviceto transmit a service advertising signal; and transmit, in response tothe request, a grant indicating another service advertising signaltransmission time period allocated to the third wireless communicationdevice, wherein the second wireless communication device and the thirdwireless communication device are associated with different localoperating entities. In some embodiments, wherein the transceiver isfurther configured to receive a spectrum use request for the secondwireless communication device to use the spectrum for a time period; andmonitor, during the time period, for a reservation from the secondwireless communication device.

Further embodiments of the present disclosure include an apparatuscomprising a transceiver configured to communicate, with a secondwireless communication device in a first frequency band, a serviceadvertising signal indicating an availability of a service in a secondfrequency band; and communicate, with the second wireless communicationdevice in the second frequency band, a communication signal during atime period based on a spectrum use grant from a controlling entity ofthe second frequency band, the communication signal associated with theservice, wherein the first frequency band and the second frequency bandare different.

In some embodiments, wherein at least one of the apparatus or the secondwireless communication device is associated with a local operatingentity of the second frequency band. In some embodiments, wherein thetransceiver is further configured to communicate the service advertisingsignal by transmitting the service advertising signal; and receive, fromthe second wireless communication device, a request for the service. Insome embodiments, wherein the request is received in the first frequencyband. In some embodiments, wherein the request is received in the secondfrequency band. In some embodiments, wherein the transceiver is furtherconfigured to communicate the service advertising signal by receiving,from the second wireless communication device, the service advertisingsignal; and transmit, to the second wireless communication device, arequest for the service. In some embodiments, wherein the request istransmitted in the first frequency band. In some embodiments, whereinthe request is transmitted in the second frequency band. In someembodiments, wherein the first frequency band is an unlicensed frequencyband. In some embodiments, wherein the first frequency band is in a 3.5gigahertz (GHz) spectrum.

Further embodiments of the present disclosure include acomputer-readable medium having program code recorded thereon, theprogram code comprising code for causing a user equipment (UE) toreceive, from a first wireless communication device, a networkinformation signal in a spectrum; code for causing the UE to receive,from a second wireless communication device, a service advertisingsignal based on at least a synchronization to the network informationsignal, the service advertising signal indicating an availability of aservice; and code for causing the UE to transmit, to the second wirelesscommunication device, a request for the service, wherein the firstwireless communication device and the second wireless communicationdevice are associated with different operating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, wherein the secondwireless communication device is associated with a local operatingentity of the spectrum, and wherein the UE is positioned in a geographiccoverage area of the second wireless communication device. In someembodiments, wherein the network information signal indicates a serviceadvertising signal transmission time period, and wherein thecomputer-readable medium further comprises code for causing the UE tomonitor for the service advertising signal during the serviceadvertising signal transmission time period. In some embodiments,wherein the network information signal indicates a periodicity of theservice advertising signal transmission time period. In someembodiments, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the computer-readable medium further comprises code forcausing the UE to receive, from the first wireless communication device,another network information channel signal indicating a modification tothe periodicity of the service advertising signal transmission timeperiod. In some embodiments, the computer-readable medium furthercomprises code for causing the UE to communicate, with the secondwireless communication device, a communication signal in the spectrumbased on a spectrum use grant from the first wireless communicationdevice, the communication signal associated with the service.

Further embodiments of the present disclosure include acomputer-readable medium having program code recorded thereon, theprogram code comprising code for causing a first wireless communicationdevice to obtain a network configuration for communication in aspectrum; code for causing the first wireless communication device totransmitting, by the first wireless communication device, a serviceadvertising signal in the spectrum based on the network configuration,the service advertising signal being based on a synchronization to anetwork information signal transmitted by a second wirelesscommunication device, the service advertising signal indicating anavailability of a service; and code for causing the first wirelesscommunication device to receive, from a user equipment (UE), a requestfor the service, wherein the first wireless communication device and thesecond wireless communication device are associated with differentoperating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a local operating entity of the spectrum, wherein thesecond wireless communication device is associated with a controllingentity of the spectrum, and wherein the UE is positioned in a geographiccoverage area of the first wireless communication device. In someembodiments, wherein the code for causing the first wirelesscommunication device to obtain the network configuration is furtherconfigured to request an allocation in the spectrum for a serviceadvertising signal transmission; and receive the network configurationindicating a service advertising signal transmission time periodallocated to the first wireless communication device, and wherein thecode for causing the first wireless communication device to transmit theservice advertising signal is further configured to transmit the serviceadvertising signal during the service advertising signal transmissiontime period. In some embodiments, wherein the network configurationfurther indicates a periodicity of the service advertising signaltransmission time period. In some embodiments, wherein the networkinformation signal includes a synchronization signal, and wherein theperiodicity of the service advertising signal transmission time periodis different from a transmission periodicity of the synchronizationsignal. In some embodiments, the computer-readable medium furthercomprises code for causing the first wireless communication device toreceive an instruction to modify the periodicity of the serviceadvertising signal transmission time period. In some embodiments, thecomputer-readable medium further comprises code for causing the firstwireless communication device to receive an instruction to suspend asubsequent service advertising signal transmission. In some embodiments,the computer-readable medium further comprises code for causing thefirst wireless communication device to request an allocation in thespectrum for a time period to provide the service; and code for causingthe first wireless communication device to communicate, with the UE, acommunication signal in the spectrum during the time period, thecommunication signal associated with the service.

Further embodiments of the present disclosure include acomputer-readable medium having program code recorded thereon, theprogram code comprising code for causing a first wireless communicationdevice to transmit a network information signal in a spectrum, thenetwork information signal including at least a synchronization signaland an indication of a service advertising signal transmission timeperiod allocated to a second wireless communication device; and code forcausing the first wireless communication device to refrain fromcommunicating in the spectrum during the service advertising signaltransmission time period, wherein the first wireless communicationdevice and the second wireless communication device are associated withdifferent operating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, and wherein thesecond wireless communication device is associated with a localoperating entity of the spectrum. In some embodiments, thecomputer-readable medium further comprises code for causing the firstwireless communication device to receive a request for an allocation inthe spectrum for the second wireless communication device to transmit aservice advertising signal; and code for causing the first wirelesscommunication device to transmit, in response to the request, a grantindicating a service advertising signal transmission time periodallocated to the second wireless communication device. In someembodiments, wherein the grant indicates a periodicity of the serviceadvertising signal transmission time period. In some embodiments,wherein the network information signal includes a synchronizationsignal, and wherein the periodicity of the service advertising signaltransmission time period is different from a transmission periodicity ofthe synchronization signal. In some embodiments, the computer-readablemedium further comprises code for causing the first wirelesscommunication device to transmit an instruction to instruct the secondwireless communication device to modify the periodicity of the serviceadvertising signal transmission time period. In some embodiments, thecomputer-readable medium further comprises code for causing the firstwireless communication device to transmit an instruction to instruct thesecond wireless communication device to suspend a subsequent serviceadvertising signal transmission. In some embodiments, thecomputer-readable medium further comprises code for causing the firstwireless communication device to receive a request for an allocation inthe spectrum for a third wireless communication device to transmit aservice advertising signal; and code for causing the first wirelesscommunication device to transmit, in response to the request, a grantindicating another service advertising signal transmission time periodallocated to the third wireless communication device, wherein the secondwireless communication device and the third wireless communicationdevice are associated with different local operating entities. In someembodiments, the computer-readable medium further comprises code forcausing the first wireless communication device to receive a spectrumuse request for the second wireless communication device to use thespectrum for a time period; and code for causing the first wirelesscommunication device to monitor, during the time period, for areservation from the second wireless communication device.

Further embodiments of the present disclosure include acomputer-readable medium having program code recorded thereon, theprogram code comprising code for causing a first wireless communicationdevice to communicate, with a second wireless communication device in afirst frequency band, a service advertising signal indicating anavailability of a service in a second frequency band; and code forcausing the first wireless communication device to communicate, with thesecond wireless communication device in the second frequency band, acommunication signal during a time period based on a spectrum use grantfrom a controlling entity of the second frequency band, thecommunication signal associated with the service, wherein the firstfrequency band and the second frequency band are different.

In some embodiments, wherein at least one of the first wirelesscommunication device or the second wireless communication device isassociated with a local operating entity of the second frequency band.In some embodiments, wherein the code for causing the first wirelesscommunication device to communicate the service advertising signal isfurther configured to transmit the service advertising signal, andwherein the computer-readable medium further comprises code for causingthe first wireless communication device to receive, from the secondwireless communication device, a request for the service. In someembodiments, wherein the code for causing the first wirelesscommunication device to receive the request is further configured toreceive the request in the first frequency band. In some embodiments,wherein the code for causing the first wireless communication device toreceive the request is further configured to receive the request in thesecond frequency band. In some embodiments, wherein the code for causingthe first wireless communication device to communicate the serviceadvertising signal is further configured to receive, from the secondwireless communication device, the service advertising signal, andwherein the computer-readable medium further comprises code for causingthe first wireless communication device to transmit, to the secondwireless communication device, a request for the service. In someembodiments, wherein the code for causing the first wirelesscommunication device to transmit the request is further configured totransmit the request in the first frequency band. In some embodiments,wherein the code for causing the first wireless communication device totransmit the request is further configured to transmit the request inthe second frequency band. In some embodiments, wherein the firstfrequency band is an unlicensed frequency band. In some embodiments,wherein the first frequency band is in a 3.5 gigahertz (GHz) spectrum.

Further embodiments of the present disclosure include an apparatuscomprising means for receiving, from a first wireless communicationdevice, a network information signal in a spectrum; means for receiving,from a second wireless communication device, a service advertisingsignal based on at least a synchronization to the network informationsignal, the service advertising signal indicating an availability of aservice; and means for transmitting, to the second wirelesscommunication device, a request for the service, wherein the firstwireless communication device and the second wireless communicationdevice are associated with different operating entities of the spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a controlling entity of the spectrum, wherein the secondwireless communication device is associated with a local operatingentity of the spectrum, and wherein the apparatus is positioned in ageographic coverage area of the second wireless communication device. Insome embodiments, wherein the network information signal indicates aservice advertising signal transmission time period, and wherein theapparatus further comprises means for monitoring for the serviceadvertising signal during the service advertising signal transmissiontime period. In some embodiments, wherein the network information signalindicates a periodicity of the service advertising signal transmissiontime period. In some embodiments, wherein the network information signalincludes a synchronization signal, and wherein the periodicity of theservice advertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the apparatus further comprises means for receiving, fromthe first wireless communication device, another network informationchannel signal indicating a modification to the periodicity of theservice advertising signal transmission time period. In someembodiments, the apparatus further comprises means for communicating,with the second wireless communication device, a communication signal inthe spectrum based on a spectrum use grant from the first wirelesscommunication device, the communication signal associated with theservice.

Further embodiments of the present disclosure include an apparatuscomprising means for obtaining a network configuration for communicationin a spectrum; means for transmitting a service advertising signal inthe spectrum based on the network configuration, the service advertisingsignal being based on a synchronization to a network information signaltransmitted by a second wireless communication device, the serviceadvertising signal indicating an availability of a service; and meansfor receiving, from a user equipment (UE), a request for the service,wherein the first wireless communication device and the second wirelesscommunication device are associated with different operating entities ofthe spectrum.

In some embodiments, wherein the first wireless communication device isassociated with a local operating entity of the spectrum, wherein thesecond wireless communication device is associated with a controllingentity of the spectrum, and wherein the UE is positioned in a geographiccoverage area of the first wireless communication device. In someembodiments, wherein the obtaining includes means for requesting anallocation in the spectrum for a service advertising signaltransmission; and means for receiving the network configurationindicating a service advertising signal transmission time periodallocated to the first wireless communication device, and wherein themeans for transmitting the service advertising signal is furtherconfigured to transmit the service advertising signal during the serviceadvertising signal transmission time period. In some embodiments,wherein the network configuration further indicates a periodicity of theservice advertising signal transmission time period. In someembodiments, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal. In someembodiments, the apparatus further comprises means for receiving aninstruction to modify the periodicity of the service advertising signaltransmission time period. In some embodiments, the apparatus furthercomprises means for receiving an instruction to suspend a subsequentservice advertising signal transmission. In some embodiments, theapparatus further comprises means for requesting an allocation in thespectrum for a time period to provide the service; and means forcommunicating a communication signal in the spectrum during the timeperiod, the communication signal associated with the service.

Further embodiments of the present disclosure include an apparatuscomprising means for transmitting a network information signal in aspectrum, the network information signal including at least asynchronization signal and an indication of a service advertising signaltransmission time period allocated to a second wireless communicationdevice; and means for refraining from communicating in the spectrumduring the service advertising signal transmission time period, whereinthe apparatus and the second wireless communication device areassociated with different operating entities of the spectrum.

In some embodiments, wherein the apparatus is associated with acontrolling entity of the spectrum, and wherein the second wirelesscommunication device is associated with a local operating entity of thespectrum. In some embodiments, the apparatus further comprises means forreceiving a request for an allocation in the spectrum for the secondwireless communication device to transmit a service advertising signal;and means for transmitting, in response to the request, a grantindicating a service advertising signal transmission time periodallocated to the second wireless communication device. In someembodiments, wherein the grant indicates a periodicity of the serviceadvertising signal transmission time period. In some embodiments,wherein the network information signal includes a synchronizationsignal, and wherein the periodicity of the service advertising signaltransmission time period is different from a transmission periodicity ofthe synchronization signal. In some embodiments, the apparatus furthercomprises means for transmitting an instruction to instruct the secondwireless communication device to modify the periodicity of the serviceadvertising signal transmission time period. In some embodiments, theapparatus further comprises means for transmitting an instruction toinstruct the second wireless communication device to suspend asubsequent service advertising signal transmission. In some embodiments,the apparatus further comprises means for receiving a request for anallocation in the spectrum for a third wireless communication device totransmit a service advertising signal; and means for transmitting, inresponse to the request, a grant indicating another service advertisingsignal transmission time period allocated to the third wirelesscommunication device, wherein the second wireless communication deviceand the third wireless communication device are associated withdifferent local operating entities. In some embodiments, the apparatusfurther comprises means for receiving a spectrum use request for thesecond wireless communication device to use the spectrum for a timeperiod; and means for monitoring, during the time period, for areservation from the second wireless communication device.

Further embodiments of the present disclosure include an apparatuscomprising means for communicating, with a second wireless communicationdevice in a first frequency band, a service advertising signalindicating an availability of a service in a second frequency band; andmeans for communicating, with the second wireless communication devicein the second frequency band, a communication signal during a timeperiod based on a spectrum use grant from a controlling entity of thesecond frequency band, the communication signal associated with theservice, wherein the first frequency band and the second frequency bandare different.

In some embodiments, wherein at least one of the apparatus or the secondwireless communication device is associated with a local operatingentity of the second frequency band. In some embodiments, wherein themeans for communicating the service advertising signal is furtherconfigured to transmit the service advertising signal, and wherein theapparatus further comprises means for receiving, from the secondwireless communication device, a request for the service. In someembodiments, wherein the means for receiving the request is furtherconfigured to receive the request in the first frequency band. In someembodiments, wherein the means for receiving the request is furtherconfigured to receive the request in the second frequency band. In someembodiments, wherein the means for communicating the service advertisingsignal is further configured to receive, from the second wirelesscommunication device, the service advertising signal, and wherein theapparatus further comprises means for transmitting, to the secondwireless communication device, a request for the service. In someembodiments, wherein the means for transmitting the request is furtherconfigured to transmit the request in the first frequency band. In someembodiments, wherein the means for transmitting the request is furtherconfigured to transmit the request in the second frequency band. In someembodiments, wherein the first frequency band is an unlicensed frequencyband. In some embodiments, wherein the first frequency band is in a 3.5gigahertz (GHz) spectrum.

As those of some skill in this art will by now appreciate and dependingon the particular application at hand, many modifications, substitutionsand variations can be made in and to the materials, apparatus,configurations and methods of use of the devices of the presentdisclosure without departing from the spirit and scope thereof. In lightof this, the scope of the present disclosure should not be limited tothat of the particular embodiments illustrated and described herein, asthey are merely by way of some examples thereof, but rather, should befully commensurate with that of the claims appended hereafter and theirfunctional equivalents.

What is claimed is:
 1. A method of wireless communication, comprising:receiving, by a user equipment (UE) from a first base station (BS) of afirst network operated by a first operating entity, a networkinformation signal in a frequency band allocated to the first operatingentity; receiving, by the UE from a second BS of a second networkoperated by a second operating entity different from the first operatingentity, a service advertising signal indicating an availability of aservice of the second network, the service advertising signal receivedin the frequency band and in synchronization with the networkinformation signal of the first network; transmitting, by the UE to thesecond BS, a request for the service of the second network; andcommunicating, by the UE with the second BS, a communication signal inthe frequency band over the second network during a time period, whereinthe communicating is based on the second BS being promoted from a firstpriority to a second priority for sharing the frequency band with thefirst BS during the time period in response to the request.
 2. Themethod of claim 1, wherein the first operating entity is a controllingentity of the frequency band, wherein the second operating entity is alocal operating entity of the frequency band, and wherein the UE ispositioned in a geographic coverage area of the second BS of the secondoperating entity.
 3. The method of claim 1, wherein the networkinformation signal indicates a service advertising signal transmissiontime period, and wherein the method further comprises monitoring for theservice advertising signal during the service advertising signaltransmission time period.
 4. The method of claim 3, wherein the networkinformation signal indicates a periodicity of the service advertisingsignal transmission time period.
 5. The method of claim 4, wherein thenetwork information signal includes a synchronization signal, andwherein the periodicity of the service advertising signal transmissiontime period is different from a transmission periodicity of thesynchronization signal.
 6. The method of claim 4, further comprisingreceiving, by the UE from the first BS, another network informationchannel signal indicating a modification to the periodicity of theservice advertising signal transmission time period.
 7. The method ofclaim 1, wherein the communicating is further based on a spectrum usegrant from the first BS, the communication signal associated with theservice.
 8. A method of wireless communication, comprising: obtaining,by a first base station (BS) of a first network operated by a firstoperating entity, a network configuration for communication in afrequency band allocated to a second operating entity different from thefirst operating entity; transmitting, by the first BS in the frequencyband based on the network configuration, a service advertising signalindicating an availability of a service of the first network, theservice advertising signal transmitted in synchronization with a networkinformation signal of a second network operated by the second operatingentity different from the first operating entity; receiving, by thefirst BS from a user equipment (UE), a request for the service of thefirst network; and communicating, by the first BS with the UE, acommunication signal in the frequency band over the first network duringa time period, wherein the communicating is based on the first BS beingpromoted from a first priority to a second priority for sharing thefrequency band with the second network during the time period inresponse to the request.
 9. The method of claim 8, wherein the firstoperating entity is a local operating entity of the frequency band,wherein the second operating entity is a controlling entity of thefrequency band, and wherein the UE is positioned in a geographiccoverage area of the first BS of the first operating entity.
 10. Themethod of claim 8, wherein the obtaining includes: requesting, by thefirst BS, an allocation in the frequency band for a service advertisingsignal transmission; and receiving, by the first BS, the networkconfiguration indicating a service advertising signal transmission timeperiod allocated to the first BS, and wherein the transmitting theservice advertising signal includes transmitting the service advertisingsignal during the service advertising signal transmission time period.11. The method of claim 10, wherein the network configuration furtherindicates a periodicity of the service advertising signal transmissiontime period.
 12. The method of claim 11, wherein the network informationsignal includes a synchronization signal, and wherein the periodicity ofthe service advertising signal transmission time period is differentfrom a transmission periodicity of the synchronization signal.
 13. Themethod of claim 11, further comprising receiving, by the first BS, aninstruction to modify the periodicity of the service advertising signaltransmission time period.
 14. The method of claim 8, further comprisingreceiving, by the first BS, an instruction to suspend a subsequentservice advertising signal transmission.
 15. The method of claim 8,further comprising: requesting, by the first BS, an allocation in thefrequency band for the time period to provide the service, and whereinthe communication signal is associated with the service.
 16. A method ofwireless communication, comprising: communicating, by a first wirelesscommunication device with a second wireless communication device, aservice advertising signal in a first frequency band indicating anavailability of a service in a second frequency band; and communicating,by the first wireless communication device with the second wirelesscommunication device in the second frequency band, a communicationsignal during a time period based on a spectrum use grant from acontrolling entity of the second frequency band, the communicationsignal associated with the service, the spectrum use grant granting atleast one of the first wireless communication device or the secondwireless communication device as a primary user in the second frequencyband, wherein the first frequency band and the second frequency band aredifferent.
 17. The method of claim 16, wherein at least one of the firstwireless communication device or the second wireless communicationdevice is associated with a local operating entity of the secondfrequency band.
 18. The method of claim 16, wherein the communicatingthe service advertising signal includes transmitting, by the firstwireless communication device, the service advertising signal, andwherein the method further comprises receiving, by the first wirelesscommunication device from the second wireless communication device, arequest for the service.
 19. The method of claim 18, wherein thereceiving the request includes receiving the request in at least one ofthe first frequency band or the second frequency band.
 20. The method ofclaim 16, wherein the communicating the service advertising signalincludes receiving, by the first wireless communication device from thesecond wireless communication device, the service advertising signal,and wherein the method further comprises transmitting, by the firstwireless communication device to the second wireless communicationdevice, a request for the service.
 21. The method of claim 20, whereinthe transmitting the request includes transmitting the request in atleast one of the first frequency band or the second frequency band. 22.The method of claim 16, wherein the first frequency band is anunlicensed frequency band.
 23. The method of claim 16, wherein the firstfrequency band is in a 3.5 gigahertz (GHz) spectrum.
 24. An apparatuscomprising: a transceiver configured to: receive, from a first basestation (BS) of a first network operated by a first operating entity, anetwork information signal in a frequency band allocated to the firstoperating entity; receive, from a second BS of a second network operatedby a second operating entity different from the first operating entity,a service advertising signal indicating an availability of a service ofthe second network, the service advertising signal received in thefrequency band and in synchronization with the network informationsignal of the first network; transmit, to the second BS, a request forthe service of the second network; and communicate, with the second BS,a communication signal in the frequency band over the second networkduring a time period, wherein the communication signal is communicatedbased on the second BS being promoted from a first priority to a secondpriority for sharing the frequency band with the first BS during thetime period in response to the request.
 25. The apparatus of claim 24,wherein the first operating entity is a controlling entity of thefrequency band, wherein the second operating entity is a local operatingentity of the frequency band, and wherein the apparatus is positioned ina geographic coverage area of the second BS of the second operatingentity.
 26. The apparatus of claim 24, wherein the network informationsignal indicates a service advertising signal transmission time period,and wherein the apparatus further comprises a processor configured tomonitor for the service advertising signal during the serviceadvertising signal transmission time period.
 27. The apparatus of claim26, wherein the network information signal indicates a periodicity ofthe service advertising signal transmission time period.
 28. Theapparatus of claim 27, wherein the network information signal includes asynchronization signal, and wherein the periodicity of the serviceadvertising signal transmission time period is different from atransmission periodicity of the synchronization signal.
 29. Theapparatus of claim 27, wherein the transceiver is further configured toreceive, from the first BS, another network information channel signalindicating a modification to the periodicity of the service advertisingsignal transmission time period.
 30. The apparatus of claim 24, whereinthe transceiver configured to communicate the communication signal isfurther configured to communicate, with the second BS, the communicationsignal in the frequency band based on a spectrum use grant from thefirst BS, the communication signal associated with the service.